Implement CSI-K, tweak tests.

bin/varnishtest/tests/u00010.vtc

@@ -18,4 +18,4 @@ client c1 {
 	rxresp
 } -run
 
-process p1 -need-bytes 2000 -screen_dump -write {q} -wait
+process p1 -need-bytes 1000 -screen_dump -write {q} -wait

bin/varnishtest/tests/u00011.vtc

@@ -24,4 +24,4 @@ process p1 -writeln {quit}
 
 process p1 -need-bytes 400
 
-process p1 -screen_dump -writeln {quit} -wait
+process p1 -screen_dump -write "quit\r" -wait

bin/varnishtest/vtc_process.c

@@ -714,10 +714,11 @@ cmd_process(CMD_ARGS)
 			u = strtoumax(av[1], NULL, 0);
 			av++;
 			do {
-				usleep(100000);
+				usleep(500000);
 				AZ(pthread_mutex_lock(&p->mtx));
 				v = p->stdout_bytes;
 				AZ(pthread_mutex_unlock(&p->mtx));
+				vtc_log(p->vl, 4, "Have %ju bytes", v);
 			} while(v < u);
 			continue;
 		}

bin/varnishtest/vtc_term.c

@@ -119,6 +119,25 @@ term_escape(struct term *tp, int c, int n)
 			vtc_fatal(tp->vl, "ANSI J[%d]", tp->arg[0]);
 		term_clear(tp);
 		break;
+	case 'K':
+		// erase in line 0=right, 1=left, 2=full line
+		switch (tp->arg[0]) {
+		case 0:
+			for (i = tp->col + 1; i < tp->ncol; i++)
+				tp->vram[tp->line][i] = ' ';
+			break;
+		case 1:
+			for (i = 0; i < tp->col; i++)
+				tp->vram[tp->line][i] = ' ';
+			break;
+		case 2:
+			for (i = 0; i < tp->ncol; i++)
+				tp->vram[tp->line][i] = ' ';
+			break;
+		default:
+			vtc_fatal(tp->vl, "ANSI K[%d]", tp->arg[0]);
+		}
+		break;
 	case 'm':
 		// Ignore Graphic Rendition settings
 		break;